CN108170052A - A kind of expansible digital power control system and method based on FPGA - Google Patents
A kind of expansible digital power control system and method based on FPGA Download PDFInfo
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- CN108170052A CN108170052A CN201711426551.4A CN201711426551A CN108170052A CN 108170052 A CN108170052 A CN 108170052A CN 201711426551 A CN201711426551 A CN 201711426551A CN 108170052 A CN108170052 A CN 108170052A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
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Abstract
The invention discloses a kind of expansible digital power control systems based on FPGA, including voltage acquisition isolation module, the first expansion slot, FPGA control modules, the second expansion slot and drive isolation module, wherein：Voltage acquisition isolation module for the voltage signal that main circuit is fed back to be converted into corresponding digital signal, and is exported through first expansion slot to the FPGA control modules；FPGA control modules are acquired and monitor to power-supply system according to the voltage digital signal received, and output control signals to the driving isolation module through second expansion slot；And driving isolation module, for being isolated and amplifying the control signal and export to the main circuit, to drive the electronic switch of the main circuit.The present invention can have good versatility using the control mode and realization while the purpose for controlling multiple power supplies that power supply numerical control system drives.
Description
Technical field
The present invention relates to field of switch power, more particularly to a kind of expansible digital power control system based on FPGA
And method.
Background technology
Have benefited from the development of power technology, radar power supply also is changed to generally adopt now from very bulky linear power supply
Switching Power Supply, shared volume are also reduced to the even smaller of linear power supply 1/10；Switching Power Supply is according to power, input and output
The requirements such as voltage, efficiency can use different main circuit topologies, it is common have half-bridge, full-bridge, LCC resonance, PFC, synchronous rectification,
Sofe Switch etc., corresponding common control mode have open loop, adjust width, frequency modulation, phase shift and complex controll etc..
By development for many years, the analog control technique of Switching Power Supply is highly developed, and the market of simulation control chip accounts for
There is the rate also very high.But simulation control chip generally only corresponds to a kind of control mode and power supply controls all the way, the weight of main circuit
New design is often also required to the redesign of control circuit, increases the complexity and workload of Power Management Design；Needs are carried
For the system such as VPX power inserts of multiple power sources output, traditional analog control mode is needed to every road Power Management Design
Control protection electric circuit not only increases cost and volume, but also design work becomes cumbersome and complicated, while also reduces production
The reliability of product.
Invention content
The purpose of the present invention is to provide a kind of control mode that power supply numerical control system can be used to drive and realizations
Control multiple power supplies simultaneously.
In order to achieve the above objectives, the present invention uses following technical proposals：
A kind of expansible digital power control system based on FPGA is provided, is expanded including voltage acquisition isolation module, first
Slot, FPGA control modules, the second expansion slot and driving isolation module are opened up, wherein：
Voltage acquisition isolation module for the voltage signal that main circuit is fed back to be converted into corresponding digital signal, and passes through
First expansion slot is exported to the FPGA control modules；
FPGA control modules are acquired and supervise to the power control system according to the voltage digital signal received
It surveys, and the driving isolation module is output control signals to through second expansion slot；And
Isolation module is driven, for being isolated and amplifying the control signal and export to the main circuit, with described in driving
The electronic switch of main circuit.
Further, the voltage acquisition isolation module includes multiple voltage acquisition units, and the voltage acquisition unit is used
In each road voltage for handling the main circuit output respectively.
Further, the FPGA control modules include system-monitoring module and multiple power-supply controller of electric modules, the system
Monitoring module of uniting is used to carry out the power control system status monitoring, power-up control and communication；The power-supply controller of electric mould
The digital signal that root tuber is exported according to the voltage acquisition unit carries out voltage protection control and PID arithmetic and exports corresponding PWM
Signal.
Further, the quantity of the voltage acquisition unit in the digital power control system and the power-supply controller of electric mould
The quantity of block is variable.
Further, first expansion slot and the second expansion slot are using the socket that normal pitch is 2.54mm.
A kind of expansible digital power control based on FPGA, applied in above system, including：
S101：By the main circuit feed back at least voltage signal is converted into number by voltage acquisition isolation module all the way
The first expansion slot is transmitted to after signal；
S103：First expansion slot is by the digital data transmission to the FPGA control modules；
S105：The FPGA control modules read the digital signal and carry out voltage protection control and PID arithmetic, export
Corresponding pwm signal is to the second expansion slot；
S107：The pwm signal is transmitted to driving isolation module by second expansion slot；
S109：The pwm signal is isolated in the driving isolation module, drive amplification and exports to the main electricity
Road.
Further, the step S101 is specifically included：
S111：By the main circuit feed back at least voltage is transmitted separately to the V/ of the voltage acquisition isolation module all the way
P modular converters；
S113：Voltage signal is converted by digital signal by the V/P modular converters；
S115：The digital signal is exported after photoelectric coupler isolation to first expansion slot.
Further, the step S105 is specifically included：
S151：The power-supply controller of electric of the FPGA control modules reads the digital signal and carries out P/D conversions；
S153：The power-supply controller of electric is compared the conversion signal and carries out voltage to the power control system
Protection control；
S155：The power-supply controller of electric carries out PID calculating；
S157：The power-supply controller of electric is according to the PID result of calculations output pwm signal.
Beneficial effects of the present invention are as follows：
Concurrency, flexibility and the programmable feature that the present invention is run by using FPGA solve Switching Power Supply control road
The scaling concern of number and control mode.It is designed by modular unit, the voltage acquisition function of power supply control and PWM is driven
Isolation features are designed as expansible mode, reduce power supply product cost and volume.
Description of the drawings
The specific embodiment of the present invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 shows the schematic diagram of digital power control system of the present invention；
Fig. 2 shows the block diagrams of digital power control system of the present invention；
Fig. 3 shows the block diagram of the digital power control system of one embodiment of the invention；
Fig. 4 shows the flow chart of digital power control of the present invention；
Fig. 5 shows the flow chart of voltage acquisition isolation of the present invention；
Fig. 6 shows the flow chart of FPGA control modules processing of the present invention.
Specific embodiment
In order to illustrate more clearly of the present invention, the present invention is done further with reference to preferred embodiments and drawings
It is bright.Similar component is indicated with identical reference numeral in attached drawing.It will be appreciated by those skilled in the art that institute is specific below
The content of description is illustrative and be not restrictive, and should not be limited the scope of the invention with this.
The present invention provide it is a kind of based on field programmable gate array (Field-Programmable Gate Array,
FPGA expansible digital power control system), by using concurrency, flexibility and programmable feature that FPGA is run, solution
The certainly scaling concern of Switching Power Supply control way and control mode.As shown in Figure 1, including voltage acquisition isolation module, first
Expansion slot, FPGA control modules, the second expansion slot and driving isolation module, wherein：
Voltage acquisition isolation module for the voltage signal that main circuit is fed back to be converted into corresponding digital signal, and passes through
First expansion slot is exported to the FPGA control modules；
In the present embodiment, as shown in Fig. 2, voltage acquisition isolation module includes multiple voltage acquisition units, for respectively
Each road voltage of the main circuit output is handled, and way can be controlled to be extended according to practical power, the voltage acquisition list
The voltage signal that main circuit is fed back is converted into corresponding digital signal, and number is believed by input terminal and the main circuit interconnection of member
Number it is transmitted to the first expansion slot.First expansion slot is mainly used for the extension of voltage acquisition unit, can realize voltage acquisition unit
With the physical connection of FPGA control modules.
FPGA control modules are acquired and supervise to the power control system according to the voltage digital signal received
It surveys, and the driving isolation module is output control signals to through second expansion slot；
In this embodiment, FPGA control modules include system-monitoring module and multiple power-supply controller of electric modules, the system
Monitoring module is used to carry out the power control system status monitoring, power-up control and communication, and can be according to actual needs
Processing power supply control way is extended；The power-supply controller of electric module is believed according to the number that the voltage acquisition unit exports
Number, it carries out overvoltage or low-voltage protection control and proportional integral differential (PID) operation and exports corresponding pulse width modulation
(Pulse Width Modulation, PWM) signal, which can be the pulse signal of diversified forms, such as determine frequency modulation
Width, fixed width frequency modulation, the frequency modulation that broadens, phase shift etc., for driving power main circuit.The output terminal of FPGA control modules and the second extension
Slot connects, and the pwm signal of output is transmitted to driving isolation module by the second expansion slot.Second expansion slot is mainly used for driving
Driving isolated location and the physical connection of FPGA control modules are realized in the extension of isolated location.
Isolation module is driven, for being isolated and amplifying the control signal and export to the main circuit, with described in driving
The electronic switch of main circuit.
In a specific example, as shown in figure 3, main circuit have four tunnels output, respectively 12V, -12V, 5V and
3.3V.Four road voltage acquisition isolated locations, each voltage acquisition isolated location are chosen in voltage acquisition isolation module as needed
The digital pulse signal that frequency fixed pulse width change with voltage swing is converted voltage to using ripe V/P modular converters, it is several
Word pulse signal is transmitted to FPAG processing after high speed photo coupling chip SI8420 isolation.
First expansion slot and the second expansion slot use the socket that normal pitch is 2.54mm.
Using the EP2C35F484C7 of ALTERA companies as main control chip, peripheral circuit includes FPGA control modules
3.3V and 1.8V power supplys, clock, reset and JTAG downloads etc., journey is monitored using the Embedded Soft Core design system based on NIOS
Sequence carries out writing for power-supply controller of electric program using verilog HDL language.In this example, four road voltage input signal
12V, -12V, 5V and 3.3V first pass around P/D transformation, and the pulsewidth size information of pulse signal is converted into and four by counter
The corresponding digital quantity of road voltage signal.Collected input voltage digital quantity and preset voltage are subjected to protection processing：Work as hair
During raw over-voltage fault, cut-out PWM outputs；When under-voltage fault occurs, PWM outputs are not cut off, while by fault information reporting.So
Data obtain controlled quentity controlled variable after PID is calculated afterwards.This example uses the wide control mode of full bridge PWM tune, is calculated according to PID
Controlled quentity controlled variable adjust the pulse width of full bridge PWM pulse signal, so as to controlling the output voltage of main circuit.
Isolation module is driven to choose four tunnels driving isolated location as needed, it is each that isolated location is driven to use high speed photo coupling
Chip SI8420 carries out photoelectric processing to pwm signal, and FPGA control modules and main circuit is isolated, and then passes through driving transformer
PA2004NL is amplified pwm signal output, and pwm signal is become suitable for the drive signal of full-bridge pulse-width controlled main circuit,
This example uses pwm signal of the frequency for 200KHz.
An alternative embodiment of the invention provides a kind of expansible digital power control based on FPGA, such as Fig. 4
It is shown, applied in above system, including：
S101：By the main circuit feed back at least voltage signal is converted into number by voltage acquisition isolation module all the way
The first expansion slot is transmitted to after signal；The quantity of wherein voltage acquisition isolation module is expansible.
Further, as shown in figure 5, the step S101 is specifically included：
S111：By the main circuit feed back at least voltage is transmitted separately to the V/ of the voltage acquisition isolation module all the way
P modular converters；
S113：Voltage signal is converted by digital signal by the V/P modular converters；Wherein V/P modular converters will be electric
Pressure is converted to the digital pulse signal that frequency fixed pulse width changes with voltage swing.
S115：The digital signal is exported after photoelectric coupler isolation to first expansion slot.
S103：First expansion slot is by the digital data transmission to the FPGA control modules；
S105：The FPGA control modules read the digital signal and carry out voltage protection control and PID arithmetic, export
Corresponding pwm signal is to the second expansion slot；
Further, as shown in fig. 6, the step S105 is specifically included：
S151：The power-supply controller of electric of the FPGA control modules reads the digital signal and carries out P/D conversions；
S153：The power-supply controller of electric is compared the conversion signal and carries out voltage to the power control system
Protection control；
S155：The power-supply controller of electric carries out PID calculating；
S157：The power-supply controller of electric is according to the PID result of calculations output pwm signal.
S107：The pwm signal is transmitted to driving isolation module by second expansion slot；
S109：The pwm signal is isolated in the driving isolation module, drive amplification and exports to the main electricity
Road.
In conclusion embodiment provided by the invention is designed by modular unit, the voltage acquisition work(that power supply is controlled
Expansible mode can be designed as with PWM driving isolation features, the multi-channel control for realizing Switching Power Supply simultaneously can be according to practical need
It is extended, reduces power supply product volume, reduce the cost of power supply product.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention for those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways, all embodiments can not be exhaustive here, it is every to belong to this hair
The obvious changes or variations that bright technical solution is extended out are still in the row of protection scope of the present invention.
Claims (8)
1. a kind of expansible digital power control system based on FPGA, which is characterized in that including voltage acquisition isolation module,
One expansion slot, FPGA control modules, the second expansion slot and driving isolation module, wherein：
Voltage acquisition isolation module, for the voltage signal that main circuit is fed back to be converted into corresponding digital signal, and described in warp
First expansion slot is exported to the FPGA control modules；
FPGA control modules are acquired and monitor to the power control system according to the voltage digital signal received, and
The driving isolation module is output control signals to through second expansion slot；And
Isolation module is driven, for being isolated and amplifying the control signal and export to the main circuit, to drive the main electricity
The electronic switch on road.
2. digital power control system according to claim 1, which is characterized in that the voltage acquisition isolation module includes
Multiple voltage acquisition units, the voltage acquisition unit are used to handle each road voltage of the main circuit output respectively.
3. digital power control system according to claim 2, which is characterized in that the FPGA control modules include system
Monitoring module and multiple power-supply controller of electric modules, the system-monitoring module are used to carry out state prison to the power control system
It surveys, power-up controls and communication；The digital signal that the power-supply controller of electric module is exported according to the voltage acquisition unit carries out electricity
Pressure protection control and PID arithmetic simultaneously export corresponding pwm signal.
4. digital power control system according to claim 3, which is characterized in that in the digital power control system
The quantity of the quantity of voltage acquisition unit and the power-supply controller of electric module is variable.
5. digital power control system according to claim 1, which is characterized in that first expansion slot and the second extension
Slot uses the socket that normal pitch is 2.54mm.
A kind of 6. expansible digital power control using any one of claim 1 to 5 system, which is characterized in that packet
It includes：
S101：By the main circuit feed back at least voltage signal is converted into digital signal by voltage acquisition isolation module all the way
After be transmitted to the first expansion slot；
S103：First expansion slot is by the digital data transmission to the FPGA control modules；
S105：The FPGA control modules read the digital signal and carry out voltage protection control and PID arithmetic, and output corresponds to
Pwm signal to the second expansion slot；
S107：The pwm signal is transmitted to driving isolation module by second expansion slot；
S109：The pwm signal is isolated in the driving isolation module, drive amplification and exports to the main circuit.
7. digital power control according to claim 6, which is characterized in that the step S101 is specifically included：
S111：By the main circuit feed back at least all the way voltage be transmitted separately to the voltage acquisition isolation module V/P turn
Change the mold block；
S113：Voltage signal is converted by digital signal by the V/P modular converters；
S115：The digital signal is exported after photoelectric coupler isolation to first expansion slot.
8. digital power control according to claim 6, which is characterized in that the step S105 is specifically included：
S151：The power-supply controller of electric of the FPGA control modules reads the digital signal and carries out P/D conversions；
S153：The power-supply controller of electric is compared the conversion signal and carries out voltage protection to the power control system
Control；
S155：The power-supply controller of electric carries out PID calculating；
S157：The power-supply controller of electric is according to the PID result of calculations output pwm signal.
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| CN201711426551.4A CN108170052A (en) | 2017-12-22 | 2017-12-22 | A kind of expansible digital power control system and method based on FPGA |
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| CN201711426551.4A CN108170052A (en) | 2017-12-22 | 2017-12-22 | A kind of expansible digital power control system and method based on FPGA |
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| CA2565453C (en) * | 2004-04-26 | 2015-06-23 | Gary Pace | Adaptive gate drive for switching devices of inverter |
| CN101061627A (en) * | 2004-10-01 | 2007-10-24 | 亚历山大·普罗迪奇 | Numerical controller used for DC-DC switching inverter with ultra-high stable switching frequency work |
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Application publication date: 20180615 |